Hobsato begins as a Hobgoblin from the generation before the protagonist's reincarnation, initially possessing an average female size and standard light armor typical of her species. Her personality blends a joyous, often mocking demeanor—especially directed at her close companion Sei—with an intense, driving focus on battle and swordsmanship. This passion for combat fundamentally shapes her path, leading to significant transformations.

Her journey starts earlier as a Goblin named Gobusato. By day 61 in the novel (day 64 in the manga), she evolves into a Half Blood Lord named Burasato. This form grants her a two-meter-tall physique with defined muscles, carnelian pupils, slightly red skin, and long blood-red hair in a ponytail. A distinctive 15-centimeter ruby protrudes from her forehead, and two five-centimeter demon orbs embed in her hands. A black tattoo, mirroring the protagonist's design, appears on her back. She gains red iron full plate armor, a red cape resistant to physical and magical attacks, and the enchanted blood-sucking long sword "Blood Princess." Her combat prowess centers on materializing weapons from her blood.

Further evolution sees her become a Blood Lord by day 175 (day 180 manga), growing approximately 10 centimeters taller with more developed musculature. She ultimately ascends to Blood Raid Empress status on day 244 (day 249 manga), reflecting escalating strength and close-quarters combat specialization.

Key relationships define her journey. She shares a profound bond with Sei, marked by mutual respect and deep affection, evolving into a confirmed romantic relationship by day 261. She acknowledges the protagonist as her leader and a figure representing the younger generation, operating within his mercenary group. Her obsession with swords manifests as a habit of expending significant resources to acquire new blades.

Her combat role emphasizes relentless offense, leveraging blood-based weapon materialization and physical enhancements gained through each evolution. This solidifies her position among the upper tiers of power within her group's hierarchy, recognized for specialized frontline capabilities.

Below is a summary of her rank-up progression:

| **Race** | **Species** | **Name** | **Day (Novel/Manga)** |
|----------------------|-----------------------|-------------|------------------------|
| Goblin | Gobusato | Gobusato | Before series start |
| Hobgoblin | Hobusato | Hobusato | Before series start |
| Half Blood Lord | Burasato | Burasato | Day 61 / Day 64 |
| Blood Lord | Variant | Burasato | Day 175 / Day 180 |
| Blood Raid Empress | Variant | Burasato | Day 244 / Day 249 |